Hadith 9936

حَدَّثَنَا عَبْدُ الرَّحْمَنِ ، قََالَ : حَدَّثَنَا سُفْيَانُ ، عَنْ أَبِي مَالِكٍ الْأَشْجَعِيِّ ، عَنْ أَبِي حَازِمٍ ، عَنْ أَبِي هُرَيْرَةَ ، قََالَ : قََالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " لَا إِغْرَارَ فِي صَلَاةٍ وَلَا تَسْلِيمٍ " .
It is narrated from Hazrat Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: There is absolutely no "aghrar" in prayer and salam. Imam Ahmad (may Allah have mercy on him) says that I asked Abu Amr al-Shaibani (may Allah have mercy on him) about the meaning of this hadith, so he said that the word is not "aghrar" but "gharar," and according to Imam Ahmad (may Allah have mercy on him), the meaning of "gharar" is that a person should not exit from the prayer until he has complete certainty that the prayer has been fully completed, and as long as he thinks that some part of the prayer remains, he should not leave the prayer.
Hadith Reference مسند احمد / مسند المكثرين من الصحابة / 9936
Hadith Grading حکم دارالسلام: إسناده صحيح